\begin{table}[H] \centering
\newcolumntype{R}{>{\raggedleft\arraybackslash}X}
\newcolumntype{L}{>{\raggedright\arraybackslash}X}
\newcolumntype{C}{>{\centering\arraybackslash}X}

\caption{Robustness checks: Economic performance}
\label{tab:robustness_checks_chix_econ}
\begin{tabularx}{\linewidth}{p{9.8cm} p{2cm} p{2cm} p{2cm}}

\toprule
{Robustness check}&{Est.}&{SE}&{p-val.} \tabularnewline
\midrule \addlinespace[\belowrulesep]
Baseline&0.269***&(0.101)&[0.003] \tabularnewline
With region and decade FE&0.245***&(0.095)&[0.004] \tabularnewline
Trimming instead of winsorizing&0.284***&(0.110)&[0.005] \tabularnewline
Winsorizing: 1st/99th percentiles&0.187**&(0.085)&[0.014] \tabularnewline
Winsorizing: 5th/95th percentiles&0.254***&(0.104)&[0.006] \tabularnewline
3 post-election years&0.259***&(0.102)&[0.004] \tabularnewline
5 post-election years&0.270***&(0.101)&[0.003] \tabularnewline
7 post-election years&0.272***&(0.101)&[0.003] \tabularnewline
10 post-election years&0.255***&(0.097)&[0.004] \tabularnewline
With year 0 in the post-election period&0.243***&(0.096)&[0.005] \tabularnewline
Twice the MSE-optimal bandwidth&0.191***&(0.092)&[0.003] \tabularnewline
Half the MSE-optimal bandwidth&0.246&(0.172)&[0.126] \tabularnewline
Second-order polynomial&0.277***&(0.105)&[0.007] \tabularnewline
Uniform kernel&0.240***&(0.093)&[0.005] \tabularnewline
Epanechnikov kernel&0.269***&(0.100)&[0.003] \tabularnewline
\bottomrule \addlinespace[\belowrulesep]

\end{tabularx}
\\ \parbox{\linewidth}{\footnotesize \emph{Notes}: This table reports estimates for equation (\ref{eq:baseline_rdd}), using variations of the economic performance index as a the dependent variable. 3, 5, 7, 10 post years: instead of using the 4 post-election years in the construction of the index, we use fewer or more years in the post period. Second-order polynomial: instead of using a linear regression in the estimation of equation (\ref{eq:baseline_rdd}), we use quadratics. Uniform (resp., Epanechnikov) kernel: replacing the default triangular kernel of the procedure of \cite{cctECMA2014} with a uniform (resp., Epanechnikov) kernel.}
\end{table}
